[Bug target/59952] -march=core-avx2 should not enable RTM

[kirill.yukhin at intel dot com]

http://gcc.gnu.org/bugzilla/show_bug.cgi?id=59952

--- Comment #11 from Yukhin Kirill <kirill.yukhin at intel dot com> ---
(In reply to Yukhin Kirill from comment #9)
> (In reply to Jakub Jelinek from comment #6)
> > Prerelease samples shouldn't count, people using those just can avoid using
> > -march=haswell and use -march=ivybridge -mavx2 or similar instead.  Can
> > anyone from Intel verify if all released Haswell CPUs have BMI2 (and if
> > there aren't plans to ship Haswell CPUs without BMI2)?
> 
> I am checking and will get back to. I though all AVX2 parts had BMI1/2

AVX2 must imply BMI. AVX2 w/ BMI disabled are not-for-sale SKUs.